CN113533971B - Power battery needling triggering thermal runaway system capable of collecting gas - Google Patents
Power battery needling triggering thermal runaway system capable of collecting gas Download PDFInfo
- Publication number
- CN113533971B CN113533971B CN202110644397.8A CN202110644397A CN113533971B CN 113533971 B CN113533971 B CN 113533971B CN 202110644397 A CN202110644397 A CN 202110644397A CN 113533971 B CN113533971 B CN 113533971B
- Authority
- CN
- China
- Prior art keywords
- gas
- power battery
- cavity
- thermal runaway
- lifting platform
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000001960 triggered effect Effects 0.000 claims abstract description 25
- 238000000034 method Methods 0.000 claims abstract description 13
- 230000008569 process Effects 0.000 claims abstract description 13
- 238000004868 gas analysis Methods 0.000 claims abstract description 11
- 239000007789 gas Substances 0.000 claims description 84
- 238000001514 detection method Methods 0.000 claims description 24
- 238000007599 discharging Methods 0.000 claims description 19
- 239000011261 inert gas Substances 0.000 claims description 16
- 238000012544 monitoring process Methods 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 7
- 238000000605 extraction Methods 0.000 claims description 4
- 230000008602 contraction Effects 0.000 claims description 3
- 230000002000 scavenging effect Effects 0.000 claims 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 abstract description 10
- 229910001416 lithium ion Inorganic materials 0.000 abstract description 10
- 238000004458 analytical method Methods 0.000 abstract description 5
- 238000012360 testing method Methods 0.000 description 7
- 239000000203 mixture Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000011076 safety test Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/382—Arrangements for monitoring battery or accumulator variables, e.g. SoC
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/62—Detectors specially adapted therefor
- G01N30/72—Mass spectrometers
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/382—Arrangements for monitoring battery or accumulator variables, e.g. SoC
- G01R31/3842—Arrangements for monitoring battery or accumulator variables, e.g. SoC combining voltage and current measurements
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N2030/022—Column chromatography characterised by the kind of separation mechanism
- G01N2030/025—Gas chromatography
Abstract
The invention discloses a power battery needling triggering thermal runaway system capable of collecting gas, which comprises: the device comprises a closed explosion-proof cavity, a lifting platform controller, a vacuumizing device, a gas collecting device, a gas analyzing device and a control module; a needling head is arranged in the closed explosion-proof cavity; the lifting platform controller is arranged in the closed explosion-proof cavity and is positioned right below the needling head; the lifting platform controller is used for bearing the power battery and driving the power battery to perform lifting movement, so that the power battery can be triggered by the needling head to generate thermal runaway; the vacuumizing device and the gas collecting device are communicated with the airtight explosion-proof cavity; the gas analysis device is communicated with the gas collection device; the control module is used for controlling the lifting platform controller, the vacuumizing device and the gas analysis device respectively; the invention can complete the needling triggering thermal runaway behavior of the lithium ion battery in the closed space, successfully collect the gas released in the thermal runaway process, and carry out component analysis by the gas analysis device.
Description
Technical Field
The invention belongs to the technical field of battery safety test, and particularly relates to a power battery needling triggering thermal runaway system capable of collecting gas.
Background
With the wide application of lithium ion batteries in the fields of aviation, aerospace, new energy automobiles and the like, potential safety hazards and problems in the use process of the lithium ion batteries are increasingly remarkable, and particularly under abusive conditions (such as high temperature, short circuit, overcharging, needling, extrusion, vibration and the like), smoke, fire and even explosion are easy to occur. However, for the safety test of the lithium ion battery, the needling test is most complicated, because the energy of the whole lithium ion battery in the needling process can be rapidly released in a short time through an internal short circuit (at most 70% of the energy is released in one minute), the temperature is rapidly increased, and then a chain reaction occurs, so that the combustion and explosion of the battery are initiated.
At present, researches on a thermal runaway and gas collecting device triggered by needling of a lithium ion battery in a closed space still fall under the blank, researchers often complete the needling process of the lithium ion battery in an open space, and gas components cannot be analyzed due to the fact that the concentration of the gas in the open space is thin during the needling process. Therefore, a needling triggering system in a closed space is necessary to be built and connected with a special gas collecting device, so that accurate data support is provided for gas composition analysis of a needling test of the lithium ion battery.
Disclosure of Invention
In view of the above, the invention provides a power battery needling triggering thermal runaway system capable of collecting gas, which can complete needling triggering thermal runaway behavior of a lithium ion battery in a closed space, successfully collect gas released in the thermal runaway process, and perform component analysis through a gas analysis device.
The invention is realized by the following technical scheme:
a power cell lancing triggered thermal runaway system for gas collection comprising: the device comprises a closed explosion-proof cavity, a lifting platform controller, a vacuumizing device, a gas collecting device, a gas analyzing device and a control module;
a needling head is arranged in the closed explosion-proof cavity;
the lifting platform controller is arranged in the closed explosion-proof cavity and is positioned right below the needling head; the lifting platform controller is used for bearing the power battery and driving the power battery to perform lifting movement, so that the power battery can be contacted with the needling head and triggered by the needling head to generate thermal runaway;
the vacuumizing device is communicated with the closed explosion-proof cavity and is used for vacuumizing the closed explosion-proof cavity;
the gas collection device is communicated with the closed explosion-proof cavity and is used for collecting gas generated by thermal runaway of the power battery;
the gas analysis device is communicated with the gas collection device and is used for analyzing components of gas generated by thermal runaway of the power battery;
the control module is used for controlling the work of the lifting platform controller, the vacuumizing device and the gas analysis device respectively.
Further, the device also comprises a charge-discharge module;
the charging and discharging module is positioned outside the closed explosion-proof cavity, and the positive electrode and the negative electrode of the charging and discharging module are respectively connected with the positive electrode and the negative electrode of the power battery correspondingly; the charging and discharging module is used for charging the power battery and triggering the power battery.
Further, the gas collection device includes: a gas collecting kettle and a valve II;
the gas collecting kettle is communicated with the inner cavity of the closed explosion-proof cavity through a collecting pipeline; a valve II is arranged on the collecting pipe; the gas collecting kettle is used for collecting gas generated after the power battery is triggered.
Further, the gas analysis device includes: a gas chromatograph mass spectrometer, an inert gas cylinder, a valve III and a valve IV; one end of the gas chromatograph mass spectrometer is communicated with the gas collecting kettle through a detection pipeline; the other end of the gas chromatograph mass spectrometer is communicated with the inert gas cylinder through a detection pipeline; the detection pipeline is provided with a valve III; a valve IV is arranged on the detection pipeline; the inert gas cylinder is internally stored with inert gas.
Further, the airtight explosion-proof cavity further comprises: a cavity body and a top cover;
the cavity body is a shell with one end open;
the top cover is fixed at the opening end of the cavity body through an explosion-proof bolt to seal the cavity body; the cavity body and the top cover form a sealed cavity; the needling head is fixed on the top cover and is positioned in the sealing cavity.
Further, a transparent explosion-proof observation window is arranged on the closed explosion-proof cavity.
Further, the lifting platform controller includes: lifting platform, hydraulic column and position sensor;
the lifting platform is arranged in the closed explosion-proof cavity through a hydraulic column and is opposite to the needling head; the hydraulic column can stretch out and draw back under the control of the control module, so that the lifting platform is driven to lift; the lifting platform is used for bearing a power battery; when the lifting platform is lifted to a set height, the power battery can be contacted with the needling head and triggered by needling of the needling head; the position sensor is arranged on the lifting platform and is used for measuring the position of the lifting platform and sending the position information to the control module; and the control module controls the expansion and contraction of the hydraulic column according to the position information.
Further, the vacuum pumping device comprises: a vacuum pump, a valve I and a pressure sensor;
the vacuum pump is communicated with the inner cavity of the closed explosion-proof cavity through an air extraction pipeline; the exhaust pipeline is provided with a valve I and a pressure sensor; the vacuum pump is used for vacuumizing the inner cavity of the closed cavity; the pressure sensor is used for measuring the pressure in the sealed cavity in the working process of the vacuum pump and sending the pressure value to the control module; the control module controls the operation of the vacuum pump according to the pressure value.
Further, the control module includes: the pressure detection device comprises a control unit, a pressure release valve and a pressure detection sensor;
a pressure relief channel communicated with the inner cavity of the closed explosion-proof cavity is formed in the closed explosion-proof cavity, and a pressure relief valve is arranged on the pressure relief channel; the pressure release valve is electrically connected with the control unit;
the pressure detection sensor is arranged in the closed explosion-proof cavity, is used for measuring the pressure in the closed explosion-proof cavity after the power battery is triggered, and is electrically connected with the control unit; the control unit is used for receiving the pressure value measured by the pressure detection sensor, controlling the switch of the pressure release valve according to the pressure value, and further controlling the pressure release of the closed explosion-proof cavity.
Further, the thermal runaway system further comprises a charge-discharge module;
the charging and discharging module is positioned outside the closed explosion-proof cavity, and the positive electrode and the negative electrode of the charging and discharging module are respectively connected with the positive electrode and the negative electrode of the power battery correspondingly; the charging and discharging module is used for charging the power battery and triggering the power battery;
the control module further includes: a first temperature sensor and a second temperature sensor;
the first temperature sensor and the second temperature sensor are respectively arranged at the center part of the surface of the power battery and the position needing to be subjected to temperature monitoring in the sealed cavity, are used for measuring the temperatures of the power battery and the position needing to be subjected to temperature monitoring in the sealed cavity, and are electrically connected with the control unit; the control unit is used for receiving the temperature information measured by the first temperature sensor and the second temperature sensor and controlling whether the charging and discharging module continuously charges the power battery or not according to the temperature information.
The beneficial effects are that: (1) The power battery of the invention is triggered to generate thermal runaway and generate gas, the gas released in the thermal runaway process can be successfully collected through the gas collecting device, and the gas is subjected to component analysis through the gas analyzing device of the invention, so that the influence of the thermal runaway of the power battery and the gas composition are obtained; the invention has simple and convenient control and easy maintenance.
(2) The invention can complete the combined triggering of the charging and the needling of the power battery in the closed explosion-proof cavity, and the lifting platform controller and the charging and discharging module C are respectively connected with the control module, so that the independent control of the charging or the needling can be realized, and the power battery can be supplied with power or the needling power battery can be triggered in an arbitrary selection mode according to test requirements.
(3) The invention can monitor and record the whole process of thermal runaway of the power battery in real time, namely, the change of parameters such as battery temperature, voltage, current, capacity, needling depth, gas generation pressure and the like along with time, can provide analysis data for the research of the thermal runaway mechanism of the power battery, and provides a basis for the improvement direction of materials in the battery.
Drawings
FIG. 1 is a structural diagram of the present invention;
the device comprises an A1-top cover, an A2-needling head, an A3-cavity body, a B1-lifting platform, a B2-hydraulic column, a B3-position sensor, a C-charge-discharge module, a C1-positive electrode, a C2-negative electrode, a D2-air extraction pipeline, a D3-pressure sensor, a D4-valve I, a D5-vacuum pump, an E1-collecting pipeline, an E2-gas collecting kettle, an E3-valve II, an F1-detecting pipeline, an F2-valve III, an F3-gas chromatograph mass spectrometer, an F4-valve IV, an F5-inert gas cylinder, an F6-detecting pipeline, an H-control unit, an H1-relief valve, an H2-pressure detecting sensor, an H3-temperature sensor I, an H4-temperature sensor II and a G-power battery.
Detailed Description
The invention will now be described in detail by way of example with reference to the accompanying drawings.
The embodiment provides a power battery needling triggering thermal runaway system capable of collecting gas, wherein a lithium ion battery is adopted as the power battery;
referring to fig. 1, the thermal runaway system includes: the device comprises a closed explosion-proof cavity, a lifting platform controller, a charging and discharging module C, a vacuumizing device, a gas collecting device, a gas analyzing device and a control module;
the airtight explosion-proof cavity comprises: a cavity body A3, a top cover A1 and a needling head A2;
the cavity body A3 is a shell with one end open, and a transparent explosion-proof observation window is arranged on the cavity body A3; the top cover A1 is hinged to the opening end of the cavity body A3, and the top cover A1 is fixed to the opening end of the cavity body A3 through an explosion-proof bolt to be closed; the cavity body A3 and the top cover A1 form a sealed cavity; the needling head A2 is fixed on the top cover A1 and is positioned in the sealing cavity;
the lifting platform controller includes: lifting platform B1, hydraulic column B2 and position sensor B3; the lifting platform B1 is arranged in the sealed cavity through a hydraulic column B2, and the center of the lifting platform B1 is opposite to the needling head A2; the hydraulic column B2 can stretch and retract under the control of the control module, so as to drive the lifting platform B1 to lift; the lifting platform B1 is used for bearing the power battery G, and the center part of the power battery G is positioned at the center of the lifting platform B1; when the lifting platform B1 is lifted to a set height, the power battery G can be in contact with the needling head A2 and is triggered by needling of the needling head A2; the position sensor B3 is arranged on the lifting platform B1 and is used for measuring the position of the lifting platform B1 and sending the position information to the control module;
the charge-discharge module C is positioned outside the closed explosion-proof cavity, and the positive electrode C1 and the negative electrode C2 of the charge-discharge module C pass through the side wall of the closed cavity and are respectively connected with the positive electrode and the negative electrode of the power battery G correspondingly; the charging and discharging module C is used for charging the power battery G so as to trigger the power battery G;
the vacuum pumping device comprises: a vacuum pump D5, a valve D4 and a pressure sensor D3; the vacuum pump D5 is communicated with the inner cavity of the closed cavity through an air exhaust pipeline D2; the air extraction pipeline D2 is provided with a valve D4 and a pressure sensor D3; the vacuum pump D5 is used for vacuumizing the inner cavity of the closed cavity; the pressure sensor D3 is used for measuring the pressure in the sealed cavity in the working process of the vacuum pump D5 and sending the pressure value to the control module;
the gas collection device includes: a gas collecting kettle E2 and a valve II E3; the gas collecting kettle E2 is communicated with the inner cavity of the closed cavity through a collecting pipeline E1; a valve II E3 is arranged on the collecting pipeline E1; the gas collecting kettle E2 is used for collecting gas generated after the power battery G is triggered;
the gas analysis device includes: gas chromatograph mass spectrometer F3, inert gas bottle F5, valve three F2 and valve four F4; one end of the gas chromatograph-mass spectrometer F3 is communicated with the gas collection kettle E2 through a detection pipeline F1; the other end of the gas chromatograph-mass spectrometer F3 is communicated with the inert gas bottle F5 through a detection pipeline F6; the detection pipeline F1 is provided with a valve three F2; a valve four F4 is arranged on the detection pipeline F6; the inert gas bottle F5 stores inert gas therein;
the control module includes: the control unit H, the pressure relief valve H1, the pressure detection sensor H2, the first temperature sensor H3 and the second temperature sensor H4;
a pressure relief channel communicated with the sealing cavity is processed on the top cover A1, and a pressure relief valve H1 is arranged on the pressure relief channel; the pressure release valve H1 is electrically connected with the control unit H;
the pressure detection sensor H2 is arranged in the cavity body A3, is used for measuring the pressure in the sealed cavity after the power battery G is triggered, and is electrically connected with the control unit H; the control unit H is used for receiving the pressure value measured by the pressure detection sensor H2, controlling the switch of the pressure release valve H1 according to the pressure value, and further controlling the pressure release of the sealing cavity;
the first temperature sensor H3 and the second temperature sensor H4 are respectively arranged at the center part of the surface of the power battery G and at the position needing to be subjected to temperature monitoring in the sealing cavity, are used for measuring the temperatures of the power battery G and the position needing to be subjected to temperature monitoring in the sealing cavity, and are electrically connected with the control unit H; the control unit H is used for receiving temperature information measured by the first temperature sensor H3 and the second temperature sensor H4 and controlling whether the charging and discharging module C continuously charges the power battery G according to the temperature information;
the control unit H is respectively and electrically connected with the hydraulic column B2 and the position sensor B3, and is used for receiving the position information measured by the position sensor B3 and controlling the expansion and contraction of the hydraulic column B2 according to the position information;
the control unit H is respectively and electrically connected with the vacuum pump D5 and the pressure sensor D3, and is used for receiving the pressure in the sealed cavity measured by the pressure sensor D3 and controlling the vacuum pump D5 to work according to the pressure value;
the control unit H is also electrically connected with the gas chromatograph-mass spectrometer F3 and is used for controlling the work of the gas chromatograph-mass spectrometer F3;
wherein, valve one D4, valve two E3, valve three F2 and valve four F4 are manual valves.
Working principle: in the initial state, the valve D4, the valve E3, the valve F2, the valve F4 and the pressure relief valve H1 are all closed;
firstly, opening a first vacuumizing valve D4 and a vacuum pump D5, vacuumizing the sealed cavity, and measuring the pressure in the sealed cavity through a pressure sensor D3 in the vacuumizing process;
secondly, setting charging current and voltage of a charging and discharging module C according to the sample state requirement of the test, and controlling the charging and discharging module C to charge a power battery G through a control unit H;
thirdly, after the power battery G reaches the sample state of test requirement, setting the speed of the needling head A2 and the travelling distance of the needling head A2, and setting the extending speed and the extending distance of the hydraulic column B2 as the needling head A2 is fixed; the control unit H controls the hydraulic column B2 to extend according to the setting, so that the power battery G is in contact with the needling head A2, the needling head A2 is used for needling the power battery G, and the power battery G is triggered to generate thermal runaway and generate gas; at this time, the temperature of the power battery G and the position in the sealed cavity, which needs to be subjected to temperature monitoring, are monitored and recorded through a first temperature sensor H3 and a second temperature sensor H4 respectively;
fourth, monitoring and recording the pressure change in the sealed cavity through a pressure detection sensor H2 in the thermal runaway process of the power battery G; when the temperature of the gas in the sealed cavity is reduced to below 50 ℃ after the test reaction is carried out for a certain time, opening a valve II E3, and closing the valve II E3 after the gas in the sealed cavity enters the gas collecting kettle E2;
fifthly, opening a valve III F2 and a valve IV F4 to enable the gas in the gas collecting kettle E2 and the inert gas in the inert gas cylinder F5 to flow into the gas chromatograph mass spectrometer F3, wherein the inert gas is used for increasing the flow of the gas in the gas collecting kettle E2, so that the gas in the gas collecting kettle E2 is prevented from being too little to be detected; and the gas chromatograph mass spectrometer F3 analyzes the gas components in the gas collecting kettle E2 to obtain the gas composition generated when the power battery G is in thermal runaway.
In the second step and the third step, the embodiment triggers the power battery G by a combination mode of supplying power to the power battery G by the charge-discharge module C and needling the power battery G by the needling head A2; the power battery G can be triggered by independently selecting the charging and discharging module C to supply power to the power battery G or the needling head A2 to needle the power battery G according to the test requirement; when the power battery G is triggered by independently selecting the mode of supplying power to the power battery G by the charge-discharge module C, the power battery G is controlled by the charge-discharge module C in different SOC electric quantity.
In summary, the above embodiments are only preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A power cell lancing triggered thermal runaway system for gas collection comprising: the device comprises a closed explosion-proof cavity, a lifting platform controller, a vacuumizing device, a gas collecting device, a gas analyzing device and a control module;
a needling head is arranged in the closed explosion-proof cavity;
the lifting platform controller is arranged in the closed explosion-proof cavity and is positioned right below the needling head; the lifting platform controller is used for bearing the power battery and driving the power battery to perform lifting movement, so that the power battery can be contacted with the needling head and triggered by the needling head to generate thermal runaway;
the vacuumizing device is communicated with the closed explosion-proof cavity and is used for vacuumizing the closed explosion-proof cavity;
the gas collection device is communicated with the closed explosion-proof cavity and is used for collecting gas generated by thermal runaway of the power battery;
the gas analysis device is communicated with the gas collection device and is used for analyzing components of gas generated by thermal runaway of the power battery;
the control module is used for controlling the work of the lifting platform controller, the vacuumizing device and the gas analysis device respectively;
the device also comprises a charging and discharging module;
the charging and discharging module is positioned outside the closed explosion-proof cavity, and the positive electrode and the negative electrode of the charging and discharging module are respectively connected with the positive electrode and the negative electrode of the power battery correspondingly; the charging and discharging module is used for charging the power battery and triggering the power battery;
the gas collection device includes: a gas collecting kettle and a valve II;
the gas collecting kettle is communicated with the inner cavity of the closed explosion-proof cavity through a collecting pipeline; a valve II is arranged on the collecting pipe; the gas collecting kettle is used for collecting gas generated after the power battery is triggered;
the gas analysis device includes: a gas chromatograph mass spectrometer, an inert gas cylinder, a valve III and a valve IV; one end of the gas chromatograph mass spectrometer is communicated with the gas collecting kettle through a detection pipeline; the other end of the gas chromatograph mass spectrometer is communicated with the inert gas cylinder through a detection pipeline; the detection pipeline is provided with a valve III; a valve IV is arranged on the detection pipeline; the inert gas cylinder is internally stored with inert gas.
2. A gas-trapping power cell lancing-triggered thermal runaway system according to claim 1, wherein said closed explosion-proof chamber further comprises: a cavity body and a top cover;
the cavity body is a shell with one end open;
the top cover is fixed at the opening end of the cavity body through an explosion-proof bolt to seal the cavity body; the cavity body and the top cover form a sealed cavity; the needling head is fixed on the top cover and is positioned in the sealing cavity.
3. A power battery needling triggering thermal runaway system capable of collecting gas according to claim 1, wherein a transparent explosion-proof observation window is arranged on the closed explosion-proof cavity.
4. A gas scavenging power cell lancing triggered thermal runaway system according to claim 1, wherein said lift platform controller comprises: lifting platform, hydraulic column and position sensor;
the lifting platform is arranged in the closed explosion-proof cavity through a hydraulic column and is opposite to the needling head; the hydraulic column can stretch out and draw back under the control of the control module, so that the lifting platform is driven to lift; the lifting platform is used for bearing a power battery; when the lifting platform is lifted to a set height, the power battery can be contacted with the needling head and triggered by needling of the needling head; the position sensor is arranged on the lifting platform and is used for measuring the position of the lifting platform and sending the position information to the control module; and the control module controls the expansion and contraction of the hydraulic column according to the position information.
5. A power cell lancing triggered thermal runaway system capable of gas collection as recited in claim 2, wherein said evacuating means comprises: a vacuum pump, a valve I and a pressure sensor;
the vacuum pump is communicated with the inner cavity of the closed explosion-proof cavity through an air extraction pipeline; the exhaust pipeline is provided with a valve I and a pressure sensor; the vacuum pump is used for vacuumizing the inner cavity of the closed explosion-proof cavity; the pressure sensor is used for measuring the pressure in the sealed cavity in the working process of the vacuum pump and sending a pressure value to the control module; the control module controls the operation of the vacuum pump according to the pressure value.
6. A gas scavenging power cell lancing triggered thermal runaway system according to claim 2, wherein said control module comprises: the pressure detection device comprises a control unit, a pressure release valve and a pressure detection sensor;
a pressure relief channel communicated with the inner cavity of the closed explosion-proof cavity is formed in the closed explosion-proof cavity, and a pressure relief valve is arranged on the pressure relief channel; the pressure release valve is electrically connected with the control unit;
the pressure detection sensor is arranged in the closed explosion-proof cavity, is used for measuring the pressure in the closed explosion-proof cavity after the power battery is triggered, and is electrically connected with the control unit; the control unit is used for receiving the pressure value measured by the pressure detection sensor, controlling the switch of the pressure release valve according to the pressure value, and further controlling the pressure release of the closed explosion-proof cavity.
7. A gas scavenging power cell lancing triggered thermal runaway system according to claim 6, wherein said thermal runaway system further comprises a charge and discharge module;
the control module further includes: a first temperature sensor and a second temperature sensor;
the first temperature sensor and the second temperature sensor are respectively arranged at the center part of the surface of the power battery and the position needing to be subjected to temperature monitoring in the sealed cavity, are used for measuring the temperatures of the power battery and the position needing to be subjected to temperature monitoring in the sealed cavity, and are electrically connected with the control unit; the control unit is used for receiving the temperature information measured by the first temperature sensor and the second temperature sensor and controlling whether the charging and discharging module continuously charges the power battery or not according to the temperature information.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110644397.8A CN113533971B (en) | 2021-06-09 | 2021-06-09 | Power battery needling triggering thermal runaway system capable of collecting gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110644397.8A CN113533971B (en) | 2021-06-09 | 2021-06-09 | Power battery needling triggering thermal runaway system capable of collecting gas |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113533971A CN113533971A (en) | 2021-10-22 |
| CN113533971B true CN113533971B (en) | 2023-11-24 |
Family
ID=78095755
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110644397.8A Active CN113533971B (en) | 2021-06-09 | 2021-06-09 | Power battery needling triggering thermal runaway system capable of collecting gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113533971B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105445320A (en) * | 2015-11-18 | 2016-03-30 | 王建刚 | Thermal runaway visualizing test and analysis system for power battery |
| CN105954678A (en) * | 2016-04-21 | 2016-09-21 | 中国民航大学 | Battery thermal runaway trigger and released gas collecting device |
| CN109959579A (en) * | 2019-03-27 | 2019-07-02 | 中国北方车辆研究所 | The measurement of lithium ion battery thermal runaway process gas production and gas collector |
| WO2020052286A1 (en) * | 2018-09-13 | 2020-03-19 | 南京工业大学 | Method for collecting and testing lithium ion battery thermal runaway products |
| CN111103404A (en) * | 2019-12-23 | 2020-05-05 | 国联汽车动力电池研究院有限责任公司 | Analysis device and method for thermal runaway tail gas of power battery |
| CN112467300A (en) * | 2020-12-14 | 2021-03-09 | 江苏塔菲尔动力系统有限公司 | Explosion-proof combination valve, top cap and battery |
| CN112510278A (en) * | 2020-11-30 | 2021-03-16 | 同济大学 | Thermal runaway detection and processing method and system for vehicle-mounted lithium ion power battery pack |
-
2021
- 2021-06-09 CN CN202110644397.8A patent/CN113533971B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105445320A (en) * | 2015-11-18 | 2016-03-30 | 王建刚 | Thermal runaway visualizing test and analysis system for power battery |
| CN105954678A (en) * | 2016-04-21 | 2016-09-21 | 中国民航大学 | Battery thermal runaway trigger and released gas collecting device |
| WO2020052286A1 (en) * | 2018-09-13 | 2020-03-19 | 南京工业大学 | Method for collecting and testing lithium ion battery thermal runaway products |
| CN109959579A (en) * | 2019-03-27 | 2019-07-02 | 中国北方车辆研究所 | The measurement of lithium ion battery thermal runaway process gas production and gas collector |
| CN111103404A (en) * | 2019-12-23 | 2020-05-05 | 国联汽车动力电池研究院有限责任公司 | Analysis device and method for thermal runaway tail gas of power battery |
| CN112510278A (en) * | 2020-11-30 | 2021-03-16 | 同济大学 | Thermal runaway detection and processing method and system for vehicle-mounted lithium ion power battery pack |
| CN112467300A (en) * | 2020-12-14 | 2021-03-09 | 江苏塔菲尔动力系统有限公司 | Explosion-proof combination valve, top cap and battery |
Non-Patent Citations (2)
| Title |
|---|
| 任常兴 ; 张欣 ; 慕洋洋 ; 李晋 ; .典型灭火气体对锂离子电池热失控作用特性研究.消防科学与技术.2018,(第09期),全文. * |
| 李顶根 ; 邹时波 ; 郑军林 ; 陶欢 ; .锂离子动力电池针刺滥用热失控仿真计算.汽车工程学报.2018,(第04期),全文. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113533971A (en) | 2021-10-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101583373B1 (en) | Apparatus for real time analyzing inner gas in secondary electric cell | |
| CN113109713B (en) | Power battery acupuncture triggers heat loss control system and gas collection device in airtight space | |
| CN2724013Y (en) | Electric automobile battery test device | |
| CN113533971B (en) | Power battery needling triggering thermal runaway system capable of collecting gas | |
| CN113311339A (en) | Lithium ion battery thermal runaway testing arrangement | |
| CN111208255A (en) | Visual high-pressure burning rate instrument and method for multiple solid propellant drug strips | |
| CN209342441U (en) | A kind of battery core electrolyte inside sampling analysis device | |
| CN207021341U (en) | Metal-air battery test device | |
| KR102105470B1 (en) | Apparatus and method for measuring Lithium Air Battery | |
| CN209280377U (en) | Battery thermal runaway gas collector | |
| CN114636724A (en) | Lithium ion battery thermal runaway gas collection system and calculation method | |
| CN216285620U (en) | Lithium ion battery thermal runaway testing device | |
| CN111123125A (en) | Battery detection device and method | |
| CN114527393A (en) | System and method for analyzing gas production acquisition time sequence of thermal runaway reaction of lithium ion battery | |
| CN107086627A (en) | A kind of new energy car battery monitoring management apparatus | |
| KR102180627B1 (en) | An apparatus for automated pyrolysis of a sample | |
| CN114944528A (en) | Flexible package battery containing indwelling tube and detection method thereof | |
| CN114518541A (en) | Battery thermal runaway experimental device and experimental method | |
| CN207021709U (en) | A kind of new energy car battery monitoring management apparatus | |
| CN220708937U (en) | Extrusion testing device for lithium ion battery module | |
| CN116859269B (en) | Comprehensive evaluation method and system for safety of power battery | |
| CN219625663U (en) | Battery testing device | |
| CN214335164U (en) | Energy storage battery's test platform | |
| CN217765851U (en) | Battery pressure testing device for battery detection | |
| CN220854738U (en) | Intelligent gas detector |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |